1. Seedling selection: The quality of seedlings is related to the success of mandarin fish breeding. Requirements for stocking seedlings: healthy and disease-free, with good vitality, even and plump body shape, vigorous feeding, uniform specifications, and no deformities. It is best to choose improved seeds that have been selected and rejuvenated. Virus testing can be carried out in advance if conditions permit to ensure that the stocking does not carry the iridescent virus. of seedlings. The fry size of stocked sweet-scented osmanthus fish is preferably 1-1.5 times that of the bait fish. 2. Seedling cultivation: Before entering the seedlings, the fry should be disinfected and disinfected. The conventional method is to soak the fry with 60ppm formaldehyde for 10-15 minutes. During the cultivation period, sufficient and palatable bait fish must be fed, and disease prevention measures must be strengthened. Generally, 0.7 ppm copper sulfate, 100 grams of insecticide/mu?6?1m or 100g of quick-acting insecticide/mu?6?1m are used every 3-5 days to kill insects. 1-2 times after each insecticide Use 0.5ppm strong chlorine essence or 0.5 pieces of Kangfeng type chlorine dioxide/mu?6?1m every day for water disinfection. After 25-30 days of cultivation, 2-3 cm sweet-scented osmanthus fry can grow to 8-10 cm pond culture size.